package main

import (
	"reflect"
	"testing"
)

type testcase struct {
	// i is the input
	i []string
	// o is the expected output
	o []string
}

func TestPrefixOArgs(t *testing.T) {
	testcases := []testcase{
		testcase{
			i: nil,
			o: nil,
		},
		testcase{
			i: []string{"gocryptfs"},
			o: []string{"gocryptfs"},
		},
		testcase{
			i: []string{"gocryptfs", "-v"},
			o: []string{"gocryptfs", "-v"},
		},
		testcase{
			i: []string{"gocryptfs", "foo", "bar", "-v"},
			o: []string{"gocryptfs", "foo", "bar", "-v"},
		},
		testcase{
			i: []string{"gocryptfs", "foo", "bar", "-o", "a"},
			o: []string{"gocryptfs", "-a", "foo", "bar"},
		},
		testcase{
			i: []string{"gocryptfs", "foo", "bar", "-o", "a,b,xxxxx"},
			o: []string{"gocryptfs", "-a", "-b", "-xxxxx", "foo", "bar"},
		},
		testcase{
			i: []string{"gocryptfs", "foo", "bar", "-oooo", "a,b,xxxxx"},
			o: []string{"gocryptfs", "foo", "bar", "-oooo", "a,b,xxxxx"},
		},
	}
	for _, tc := range testcases {
		o := prefixOArgs(tc.i)
		if !reflect.DeepEqual(o, tc.o) {
			t.Errorf("\n   i=%q\nwant=%q\n got=%q", tc.i, tc.o, o)
		}
	}
}